import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
import Layout from '@/layout'

// 当设置 true 的时候该路由不会再侧边栏出现 如401，login等页面，或者如一些编辑页面/edit/1
// hidden: true // (默认 false)

// 当设置 noRedirect 的时候该路由在面包屑导航中不可被点击
// redirect: 'noRedirect'

// 当你一个路由下面的 children 声明的路由大于1个时，自动会变成嵌套的模式--如组件页面
// 只有一个时，会将那个子路由当做根路由显示在侧边栏--如引导页面
// 若你想不管路由下面的 children 声明的个数都显示你的根路由
// 你可以设置 alwaysShow: true，这样它就会忽略之前定义的规则，一直显示根路由
// alwaysShow: true

// name: 'router-name' //设定路由的名字，一定要填写不然使用<keep-alive>时会出现各种问题
// meta: {
//   roles: ['admin', 'editor'] //设置该路由进入的权限，支持多个权限叠加
//   title: 'title' //设置该路由在侧边栏和面包屑中展示的名字
//   icon: 'svg-name' //设置该路由的图标
//   noCache: true //如果设置为true，则不会被 <keep-alive> 缓存(默认 false)
//   breadcrumb: false // 如果设置为false，则不会在breadcrumb面包屑中显示
// }

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
export const constantRoutes = [
  {
    path: '/redirect',
    component: Layout,
    hidden: true,
    children: [
      {
        path: '/redirect/:path*',
        component: () => import('@/views/redirect/index')
      }
    ]
  },

  {
    path: '/login',
    component: () => import('@/views/login/index'),
    hidden: true
  },

  {
    path: '/auth-redirect',
    component: () => import('@/views/login/auth-redirect'),
    hidden: true
  },

  {
    path: '/404',
    component: () => import('@/views/error-page/404'),
    hidden: true
  },

  {
    path: '/401',
    component: () => import('@/views/error-page/401'),
    hidden: true
  },

  {
    path: '/',
    component: Layout,
    redirect: '/dashboard',
    children: [
      {
        path: 'dashboard',
        component: () => import('@/views/dashboard/index'),
        name: 'Dashboard',
        meta: { title: '主页', icon: 'dashboard', affix: true }
      }
    ]
  }

]

/**
 * asyncRoutes
 * the routes that need to be dynamically loaded based on user roles
 */
export const asyncRoutes = [

  {
    path: '/permission',
    component: Layout,
    redirect: '/permission/pagePermission',
    alwaysShow: true, // will always show the root menu
    name: 'Permission',
    meta: {
      title: '',
      icon: 'lock',
      roles: []
    },
    children: [
      {
        path: 'pagePermission',
        component: () => import('@/views/permission/page'),
        name: 'PagePermission',
        meta: {
          title: '',
          roles: []
        }
      },
      {
        path: 'directivePermission',
        component: () => import('@/views/permission/directive'),
        name: 'DirectivePermission',
        meta: {
          title: '',
          roles: []
        }
      },
      {
        path: 'rolePermission',
        component: () => import('@/views/permission/role'),
        name: 'RolePermission',
        meta: {
          title: '',
          roles: []
        }
      }
    ]
  },

  {
    path: '/system',
    component: Layout,
    redirect: '/system/user',
    alwaysShow: true,
    name: 'System',
    meta: {
      title: '',
      icon: 'system',
      roles: []
    },
    children: [
      {
        path: 'user',
        component: () => import('@/views/system/user'),
        name: 'User',
        meta: {
          title: '',
          roles: []
        }
      },
      {
        path: 'role',
        component: () => import('@/views/system/role'),
        name: 'Role',
        meta: {
          title: '',
          roles: []
        }
      },
      {
        path: 'menu',
        component: () => import('@/views/system/menu'),
        name: 'Menu',
        meta: {
          title: '',
          roles: []
        }
      }
    ]
  },

  // 404 page must be placed at the end !!!
  { path: '*', redirect: '/404', hidden: true }
]

const createRouter = () => new Router({
  // mode: 'history', // require service support
  scrollBehavior: () => ({ y: 0 }),
  routes: constantRoutes
})

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

export default router
